K&N 2005 Nissan Sentra cold air intake systems are a great way to maximize airflow and engine performance. These cold air intakes simply bolt on to your Nissan using the existing factory mounting points whenever possible.

I heard a lot of controversy regarding cold air intakes so decided to try one out for myself. I wasn't expecting much out of it, but I thought I'd give it a go. I chose K&N simply because they're a very reputable brand. The intake was delivered within the same week and I installed it the same day. The instructions were very easy to follow and it all fits in my 2004 Nissan Sentra SE R Spec v very well. It's a bit snug in some places but I consider that a good thing. It takes up way less space than the factory air box which is always a plus as well. After tweaking a few hose clamps and getting everything nice and secured I took it on a little test drive. Much to my surprise and satisfaction my Sentra is noticeably more responsive and sounds absolutely fantastic. I should note that besides the new intake it's completely stock. After about 4 days and 200 miles of driving around with it on I'm absolutely in love. The red looks fantastic in the engine bay (especially if you pull that engine cover off and show off those valve covers)and my fuel economy even went up Before installing the intake I was averaging 23.5 mpg. Now I'm averaging 25.2 mpg. That I wasn't expecting at all, but hey if it's gonna pay for itself it can go right ahead. My only advice is to not skip the last few steps, which is listening for air leaks while at rest and under load, one of my connections did come loose after a few hours of driving because I was in too much of a hurry to be tedious with it. However, I did reconnect it and snug it back down more carefully this time and it's been fine ever since. If you're considering buying this for your SE R I highly highly recommend it.